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Automatic acquisition of time-slice image sequences

: Kettern, M.; Schneider, D.C.; Prestele, B.; Zilly, F.; Eisert, P.


IEEE Computer Society:
Conference on Visual Media Production, CVMP 2010. Proceedings : 17-18 Nov. 2010, London
Los Alamitos, Calif.: IEEE Computer Society Press, 2010
ISBN: 978-0-7695-4268-3
ISBN: 978-1-4244-8872-8
Conference on Visual Media Production (CVMP) <7, 2010, London>
Conference Paper
Fraunhofer HHI ()

Acquisition of consistent multi-camera image data such as for time-slice sequences (widely known by their use as cinematic effects, e.g. in "The Matrix") is a challenging task, especially when using low-cost image sensors. Many different steps such as camera calibration and color conformation are involved, each of which poses individual problems. We have developed a complete and extendable setup for recording a time-slice image sequence displaying a rotation around the subject utilizing a circular camera array. Integrating all the aforementioned steps into a single environment, this setup includes geometrical and color calibration of the camera hardware utilizing a novel, multi-functional calibration target as well as a software color adaption to refine the calibration results. To obtain a steadily rotating animation, we have implemented an image rectification which compensates for inevitable mounting inaccuracies and creates a smooth viewpoint trajectory based on the g eometrical calibration of the cameras.